Hospital rankings

Hospitals in Wisconsin with the lowest CABG surgery death rate

18 Wisconsin hospitals ranked by CABG surgery death rate in the 2026 Medicare (CMS) data. Leading: SSM Health St Mary's Hospital - Madison, St Vincent Hospital, SSM Health St Agnes Hospital-Fond Du Lac. Filter by type, ownership and size, choose the measures you care about, and sort by any column.

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18 hospitals ranked in Wisconsin by cabg surgery death rate; 122 more match but have no reported value.

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Hospital rankings, page 1 of 1. Columns can be sorted.
#	Hospital	CABG surgery death ratelower is better	Overall star ratinghigher is better	Patient survey star ratinghigher is better	Heart attack death ratelower is better	Heart failure death ratelower is better	Hospital-wide readmission ratelower is better · 2025 data	Serious complicationslower is better	Time in emergency departmentlower is better	Medicare spending per patientlower is better	Total beds	Compare
	National average	2.4%		3.3	11.9%	11.1%	15.0%	1.00	162 min	1.00
1	SSM Health St Mary's Hospital - MadisonMadison, WI · Acute care	1.5%, 96th percentile	4, 73rd percentile	4, 76th percentile	10.3%, 92nd percentile	14.5%, 5th percentile	14.4%, 83rd percentile	0.90, 73rd percentile	190 min, 24th percentile	0.93, 80th percentile	440	Compare SSM Health St Mary's Hospital - Madison
2	St Vincent HospitalGreen Bay, WI · Acute care	1.6%, 93rd percentile	4, 73rd percentile	3, 39th percentile	11.6%, 58th percentile	15.2%, 3rd percentile	14.0%, 93rd percentile	1.24, 8th percentile	133 min, 62nd percentile	0.99, 50th percentile	523	Compare St Vincent Hospital
3	SSM Health St Agnes Hospital-Fond Du LacFond Du Lac, WI · Acute care	1.9%, 78th percentile	4, 73rd percentile	4, 76th percentile	10.8%, 83rd percentile	15.5%, 2nd percentile	15.0%, 46th percentile	1.06, 25th percentile	150 min, 49th percentile	0.88, 92nd percentile	151	Compare SSM Health St Agnes Hospital-Fond Du Lac
T4	Aurora Medical CenterGrafton, WI · Acute care	2.0%, 69th percentile	5, 94th percentile	4, 76th percentile	11.4%, 65th percentile	9.1%, 85th percentile	14.7%, 68th percentile	1.05, 26th percentile	188 min, 25th percentile	0.85, 95th percentile	62	Compare Aurora Medical Center
T4	Aspirus Wausau HospitalWausau, WI · Acute care	2.0%, 69th percentile	4, 73rd percentile	4, 76th percentile	11.8%, 49th percentile	11.8%, 34th percentile	14.1%, 91st percentile	0.97, 46th percentile	157 min, 44th percentile	0.95, 71st percentile	321	Compare Aspirus Wausau Hospital
T4	Bellin Memorial HospitalGreen Bay, WI · Acute care	2.0%, 69th percentile	4, 73rd percentile	4, 76th percentile	11.5%, 62nd percentile	15.1%, 3rd percentile	14.2%, 89th percentile	1.30, 6th percentile	151 min, 48th percentile	0.94, 76th percentile	242	Compare Bellin Memorial Hospital
T4	Waukesha Memorial HospitalWaukesha, WI · Acute care	2.0%, 69th percentile	4, 73rd percentile	4, 76th percentile	12.4%, 29th percentile	10.6%, 58th percentile	15.5%, 19th percentile	0.90, 73rd percentile	140 min, 56th percentile	1.05, 19th percentile	400	Compare Waukesha Memorial Hospital
8	University Of Wisconsin Hospitals & Clinics AuthorityMadison, WI · Acute care	2.1%, 62nd percentile	5, 94th percentile	4, 76th percentile	11.6%, 58th percentile	8.5%, 91st percentile	14.2%, 89th percentile	1.04, 28th percentile	214 min, 13th percentile	0.93, 80th percentile	536	Compare University Of Wisconsin Hospitals & Clinics Authority
T9	Mayo Clinic Health System Eau Claire HospitalEau Claire, WI · Acute care	2.3%, 49th percentile	5, 94th percentile	4, 76th percentile	10.3%, 92nd percentile	12.0%, 30th percentile	13.6%, 97th percentile	0.68, 99th percentile	178 min, 31st percentile	0.95, 71st percentile	304	Compare Mayo Clinic Health System Eau Claire Hospital
T9	Aurora St Lukes Medical CenterMilwaukee, WI · Acute care	2.3%, 49th percentile	4, 73rd percentile	3, 39th percentile	10.9%, 80th percentile	10.1%, 68th percentile	15.4%, 23rd percentile	1.09, 20th percentile	172 min, 34th percentile	0.96, 66th percentile	1,213	Compare Aurora St Lukes Medical Center
T11	Aurora BayCare Medical CenterGreen Bay, WI · Acute care	2.4%, 44th percentile	4, 73rd percentile	4, 76th percentile	12.2%, 35th percentile	12.8%, 18th percentile	14.9%, 54th percentile	1.01, 33rd percentile	133 min, 62nd percentile	0.92, 83rd percentile	132	Compare Aurora BayCare Medical Center
T11	Froedtert Memorial Lutheran HospitalMilwaukee, WI · Acute care	2.4%, 44th percentile	3, 43rd percentile	4, 76th percentile	10.7%, 85th percentile	9.5%, 79th percentile	15.4%, 23rd percentile	0.78, 95th percentile	275 min, 2nd percentile	0.96, 66th percentile	596	Compare Froedtert Memorial Lutheran Hospital
13	Froedtert South Inc.Kenosha, WI · Acute care	2.5%, 38th percentile	2, 17th percentile	3, 39th percentile	13.2%, 11th percentile	14.9%, 4th percentile	15.3%, 28th percentile	1.18, 12th percentile	157 min, 44th percentile	0.98, 55th percentile	380	Compare Froedtert South Inc.
14	Gundersen Lutheran Medical CenterLa Crosse, WI · Acute care	2.6%, 33rd percentile	4, 73rd percentile	4, 76th percentile	12.6%, 23rd percentile	12.8%, 18th percentile	13.9%, 94th percentile	1.05, 26th percentile	167 min, 37th percentile	1.07, 14th percentile	325	Compare Gundersen Lutheran Medical Center
T15	Ascension Columbia St Marys Hospital MilwaukeeMilwaukee, WI · Acute care	2.7%, 28th percentile	3, 43rd percentile	3, 39th percentile	12.3%, 32nd percentile	10.4%, 62nd percentile	13.7%, 97th percentile	0.94, 59th percentile	167 min, 37th percentile	0.98, 55th percentile	422	Compare Ascension Columbia St Marys Hospital Milwaukee
T15	Marshfield Medical CenterMarshfield, WI · Acute care	2.7%, 28th percentile	1, 3rd percentile	3, 39th percentile	12.5%, 26th percentile	11.5%, 39th percentile	16.9%, 1st percentile	1.79, 1st percentile	166 min, 38th percentile	0.99, 50th percentile	504	Compare Marshfield Medical Center
17	Thedacare Regional Medical Center - Appleton IncAppleton, WI · Acute care	3.1%, 16th percentile	4, 73rd percentile	4, 76th percentile	11.9%, 46th percentile	17.5%, 0th percentile	13.1%, 99th percentile	1.54, 2nd percentile	147 min, 51st percentile	0.92, 83rd percentile	160	Compare Thedacare Regional Medical Center - Appleton Inc
18	Mercy Health System CorpJanesville, WI · Acute care	4.6%, 2nd percentile	3, 43rd percentile	3, 39th percentile	13.3%, 10th percentile	9.2%, 84th percentile	15.1%, 40th percentile	1.16, 13th percentile	161 min, 41st percentile	0.92, 83rd percentile	240	Compare Mercy Health System Corp

About these rankings

Rankings use the 2026 release of CMS Care Compare data. Hospitals share a rank (“T”) when their values are equal, and only hospitals with a reported value for the sorted measure are ranked. Shading compares each value with every hospital in the country, so it doesn’t change with your filters. Small differences are often not statistically meaningful; use the methodology and glossary for context.

CABG surgery death rate: 30-day death rate for CABG surgery patients.
Overall star rating: CMS overall hospital quality star rating (1-5).
Patient survey star rating: HCAHPS summary star rating (1-5).
Heart attack death rate: 30-day death rate for heart attack patients.
Heart failure death rate: 30-day death rate for heart failure patients.
Hospital-wide readmission rate: Rate of unplanned readmission within 30 days, all conditions. From 2025 CMS reports the Hybrid Hospital-Wide Readmission measure (claims plus EHR data), which replaced the claims-only measure; values are close but not strictly comparable across the change. CMS suppressed it for 2026.. Latest available: 2025 release.
Serious complications: Patient safety and adverse events composite (PSI 90; 1.0 = national value).
Time in emergency department: Median time patients spent in the emergency department before leaving.
Medicare spending per patient: Medicare spending per beneficiary episode relative to the national median (1.0 = national median).
Total beds: Total beds reported to CMS (Provider of Services file).